NS Model Design and Orchestration

Maopeng Zhang

• Network Service Introduction

• NS Design Model

• NS Runtime Orchestration

Agenda

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Network Service Introduction

What’s NS

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• Network Service concept comes from ETSI, and accepted in many SDOs( 3GPP, TMForum, …)• Network Service: TMForum regards NS as resource composite in resource layer

How is Network Service Managed?

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NS Model

NSD in ETSI

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Simple Network Service via TOSCA

NSD

VNF

req

VNFD

VDU VNFVL

PNF

NSVL

…

Cap

req

Cap

substitution_mappings

https://wiki.onap.org/display/DW/ZTE+Proposal+for+Network+Service+Descriptor

Complex Network Service via TOSCA

NSD

VNF

req

NestedNS

VNFD

VDU VNFVL

PNF

NSVL

…

NSD

VNF NSVL PNF

PNFD

CP …

Cap

req

Cap

req

Cap

req

Cap

substitution_mappings substitution_mappingssubstitution_mappings

VLD

Network …

req

Cap

substitution_mappings

NS Orchestration

ONAP 5G RAN Usecase

5GApplicationEcosystem

UE/CPE

RU DUCU-UP Internet

EdgeCloud

RadioAntennas

External Content

CU-CP

RU – Remote Radio Unit DU – Distributed Unit (5G Base Unit)CU-UP – Centralized Unit, User Plane CU-CP – Centralized Unit, Control Plane

Front Haul Mid HaulBack Haul

CentralizedCloud

Radio Network Slice Subnet Instances (NSSIs)

Transport Network Slice Subnet Instances (NSSIs)

Core Network Slice Subnet Instances (NSSIs)

RAN Abstraction Model Transport Abstraction Model Core Abstraction Model

Mobile Slice Services (e.g. eMBB, Massive IoT, Mission-critical IoT)Network Slice Instances (NSIs)

Core Network Elements

A single vendor delivers RAN equipment and software

5G RAN NS Basic Model

PNF_DU

VNF_CU-CP

VNF_CU-UPPNF_RU

5G RAN Resource Model

PNF_RU PNF_DUPNF_RU

3GPP Management Scope

Network and Network Slice Management Function

RAN Management Function A

CN Management Function A

RAN Management Function B

MS(s) for CN SubNetwork and NSSI

RAN Management

Function C

CN Management Function B

CN Management Function C

MS(s)For CN NF

TN Domain Manager (out of scope of 3GPP)

MS(s) for RAN SubNetwork and NSSI

MS(s) forCN NF

MS(s) for Network and NSI

Consumer

MS(s) forRAN NF

MS(s) forRAN NF

MS(s) for CN SubNetwork and NSSI

MS(s) for RAN SubNetwork and NSSI

3GPP Management System and ETSI MANO

NFV Orchestrator

(NFVO)

VNF Manager(VNFM)

Virtualised Infrastructure

Manager(VIM)

EM

VNF

NFV-MANO

Vn-NfNE(PNF)

VNF

Vn-Nf

NFVI

Os-Ma-nfvo

Ve-Vnfm-em

Ve-Vnfm-vnf

Nf-Vi

Or-Vnfm

Vi-Vnfm

Or-Vi

EM

NE(PNF)

EM

DM

Itf-N

NM

OSS/BSS

Itf-N

3GPP management system

3GPP 5G Management

E1

gNB-DU

gNB-CU-CP

F1-C F1-U

gNB

gNB-CU-UP

gNB-DU

NFV Orchestrator

(NFVO)

VNF Manager(VNFM)

Virtualised Infrastructure

Manager(VIM)

NSSMF

NFV-MANO

PNF VNF

Os-Ma-nfvo

Ve-Vnfm-em

Ve-Vnfm-vnf

Or-Vnfm

Vi-Vnfm

Or-ViNFMF

NSS Management service

NF provisioning service

NF provisioning

service

NF provisioning service

NS Orchestration In R1&R2 VFC

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NFVO(VFC)

VNFM MultiCloud

VNF LCM VL in Cloud

SFC Controller

SFC

Enhance VFC to Support PNF

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NFVO(VFC)

VNFM MultiCloud

VNF LCM VL in Cloud

EMS

PNF Register&Init Config,..

SFC Controller

SFC

5G Usecase with VFC

VIM

SDC

VFC(NFVO、EMS Adaptor)

DCAE

VNFM

AAI/ESR

SDNC

PNF

UUI

A

BC

E

F

SO

DA: Model design & dispatchB: EMS deploys PNFC: PNF register to EM

EMS register to VFCD: UUI config PNFD parameter via AAIE: UUI invoke 5G NS via VFC

VFC decomposes the NSVFC invokes VNFM to create VNFVFC invokes EM to init config PNFVFC invokes Multivim to create VL

F: PNF report alarm/performance to ONAP

s

Thanks